I wear crocs a lot of the time because they're so easy to get on an off. They dont have soles that gather a lot of debris and are easy to clean. I usually have an extra pair to slip on in case of and extra particular customer.

New balance. They make half sizes as well as different widths cause I wear a x wide and seems nobody makes them. Plus there slip and most importantly scuff resident. Get some good reusable booties. Live circuit testing without shoes on is living on the wild side!